Furthermore, the concept of an expanded frequent itemset is introduced to greatly decrease the searching range for adjusting whether a frequent itemset is closed or not.
引入扩展频繁项集的概念，大大减小了检查频繁项集是否闭的搜索空间。
Furthermore, the concept of an expanded frequent itemset is introduced to greatly decrease the searching range for adjusting whether a frequent itemset is closed or not.
引入扩展频繁项集的概念，大大减小了检查频繁项集是否闭的搜索空间。
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